PRESENT PERFECT CONTINUOUS TENSE
Suatu perbuatan yang telah sedang dilakukan( + ) SUBJECT + HAVE / HAS + BEEN + VERB ING + OBJECT + ADVERB
Example :
I have been studying English
She has been teaching Arabic
( - ) SUBJECT + HAVE / HAS + NOT + BEEN + VERB ING + OBJECT + ADVERB
Example :
I have not been studying English
She has not been teaching Arabic
( ? ) HAVE / HAS + SUBJECT + BEEN + VERB 3 + OBJECT + ADVERB
Example :
Have I been studying English ?
Has she been teaching Arabic ?